05531500 DATA: Discharge Tables, 2004

Station list Available data
ILLINOIS RIVER BASIN

05531500 SALT CREEK AT WESTERN SPRINGS, IL


LOCATION.-- Lat 41°49'33", long 87°54'02" (NAD of 1927), in NE1/4SE1/4 sec.31, T.39 N., R.12 E., Cook County, Hydrologic Unit 07120004, on left pier at upstream side of bridge on Wolf Road, in Cook County Forest Preserve, 0.5 mi north of Western Springs, and at mile 8.8.

DRAINAGE AREA.-- 115 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1945 to current year.
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978-91 and 1999 to current year.
	MISCELLANEOUS: Contaminants in streambed sediments, August 1998; contaminants in fish tissue, August 1998.
BIOLOGICAL
	ALGAE: Water years 1989, 1990, and 2002-03.
	BENTHIC MACROINVERTEBRATES: Water years 1999 and 2002.
	FISH: Water years 1999-2000 and 2002-04.
	HABITAT: Water years 1999 and 2002-04.

REVISED RECORDS.-- WSP 1915: Drainage area. WRD IL-87-2: Drainage area. WRD IL-97-2: July 21 - Sept. 26, 1996.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 624.93 ft above NGVD of 1929. Prior to July 26, 1946, nonrecording gage at same site and datum.

REMARKS.-- Occasional regulation by sewage treatment plants upstream from station. Since May 28, 1996, some flow temporarily diverted for flood control to Elmhurst Quarry Flood Control Reservoir 12.3 miles upstream from gage.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,540 ft³/s, Aug. 17, 1987, gage height, 10.54 ft; minimum, no flow, May 27, 1998, due to bridge construction.

REMARKS FOR CURRENT YEAR.-- Records good except those for Sept. 13-30 which are fair and estimated daily discharges, which are poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	40	68	97	86	e56	164	315	111	1040	68	59	160
2	37	130	89	83	e56	200	230	106	819	64	61	131
3	59	529	83	83	e57	189	187	96	461	102	69	104
4	122	547	86	90	e60	209	161	87	311	338	355	89
5	112	855	190	101	e64	845	136	82	235	225	299	79

6	104	640	173	98	e64	853	124	78	189	160	206	83
7	97	352	142	e84	65	784	126	82	139	133	154	73
8	89	204	122	e78	62	453	120	75	111	97	128	74
9	83	149	120	76	62	278	103	72	105	145	109	79
10	78	123	540	73	61	218	98	72	233	215	94	64

11	72	113	679	74	57	193	96	129	639	186	87	56
12	67	99	556	80	48	197	91	131	757	176	81	56
13	56	94	322	83	55	158	91	179	745	118	80	50
14	229	78	223	81	59	149	107	498	641	96	77	52
15	251	69	181	70	55	138	116	568	369	81	74	64

16	169	72	153	71	56	125	114	392	242	76	73	122
17	115	74	136	78	57	123	110	223	178	68	103	92
18	85	518	136	63	57	136	106	289	133	66	93	79
19	69	662	115	43	65	172	103	353	103	69	133	48
20	61	509	102	69	136	212	123	270	83	71	106	46

21	55	287	96	e66	218	176	164	378	149	72	91	46
22	50	194	93	40	230	133	143	616	252	99	85	45
23	47	206	92	e56	232	115	115	801	184	87	80	41
24	45	343	88	e55	260	179	101	741	143	68	251	e40
25	136	259	83	e55	238	250	223	420	114	61	220	e40

26	90	190	77	e57	213	456	182	303	108	58	192	e40
27	81	155	76	e58	187	437	152	241	88	57	216	e40
28	78	130	97	46	155	390	120	195	81	52	769	e43
29	75	114	109	e54	143	746	101	163	78	55	570	e43
30	72	104	103	e56	---	731	101	403	71	67	326	e43

31	69	---	94	e56	---	510	---	902	---	59	214	---

TOTAL	2793	7867	5253	2163	3128	9919	4059	9056	8801	3289	5455	2022
MEAN	90.1	262	169	69.8	108	320	135	292	293	106	176	67.4
MAX	251	855	679	101	260	853	315	902	1040	338	769	160
MIN	37	68	76	40	48	115	91	72	71	52	59	40
CFSM	0.78	2.28	1.47	0.61	0.94	2.78	1.18	2.54	2.55	0.92	1.53	0.59
IN.	0.90	2.54	1.70	0.70	1.01	3.21	1.31	2.93	2.85	1.06	1.76	0.65

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 2004, BY WATER YEAR (WY)
MEAN	92.4	110	109	112	135	210	233	174	141	96.2	112	91.4
MAX	515	457	500	368	444	809	565	480	388	288	795	414
(WY)	2002	1986	1983	1993	1997	1979	1983	1996	1996	1978	1987	1972
MIN	3.34	5.55	8.14	5.79	12.4	46.1	41.8	24.8	25.6	10.6	3.08	3.33
(WY)	1949	1949	1954	1954	1954	1956	1946	1946	1956	1946	1948	1952

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1946 - 2004
ANNUAL TOTAL	58811		63805
ANNUAL MEAN	161		174		135
HIGHEST ANNUAL MEAN					250	1993
LOWEST ANNUAL MEAN					36.6	1953
HIGHEST DAILY MEAN	1160	May 2	1040	Jun 1	3220	Aug 17 1987
LOWEST DAILY MEAN	34	Feb 7	37	Oct 2	1.0	Aug 27 1950
ANNUAL SEVEN-DAY MINIMUM	51	Sep 19	41	Sep 23	2.1	Oct 15 1948
MAXIMUM PEAK FLOW			1110	Aug 28	3540	Aug 17 1987
MAXIMUM PEAK STAGE			7.14	Aug 28	10.54	Aug 17 1987
INSTANTANEOUS LOW FLOW			9.9	Feb 12	0.00 A	May 27 1998
ANNUAL RUNOFF (CFSM)	1.40		1.52		1.17
ANNUAL RUNOFF (INCHES)	19.02		20.64		15.91
10 PERCENT EXCEEDS	360		395		305
50 PERCENT EXCEEDS	95		104		77
90 PERCENT EXCEEDS	54		56		16

A - Due to bridge construction.